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Updated DB classes to support multiple database connection strings - for when replication is used.

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git-svn-id: http://xe-core.googlecode.com/svn/branches/1.5.0@8808 201d5d3c-b55e-5fd7-737f-ddc643e51545
This commit is contained in:
ucorina 2011-08-18 17:55:29 +00:00
parent ee1a615008
commit bb95345fb2
12 changed files with 576 additions and 680 deletions
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96
classes/db/DBPostgresql.class.php
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@ -18,12 +18,8 @@ class DBPostgresql extends DB
/**
* @brief Connection information for PostgreSQL DB
**/
var $hostname = '127.0.0.1'; ///< hostname
var $userid = null; ///< user id
var $password = null; ///< password
var $database = null; ///< database
var $prefix = 'xe'; // / <prefix of a tablename (One or more XEs can be installed in a single DB)
var $comment_syntax = '/* %s */';
var $comment_syntax = '/* %s */';
/**
* @brief column type used in postgresql
@ -69,59 +65,35 @@ class DBPostgresql extends DB
return true;
}
/**
* @brief DB settings and connect/close
**/
function _setDBInfo()
{
$db_info = Context::getDBInfo();
$this->hostname = $db_info->db_hostname;
$this->port = $db_info->db_port;
$this->userid = $db_info->db_userid;
$this->password = $db_info->db_password;
$this->database = $db_info->db_database;
$this->prefix = $db_info->db_table_prefix;
if (!substr($this->prefix, -1) != '_')
$this->prefix .= '_';
}
/**
* @brief DB Connection
**/
function _connect()
function __connect($connection)
{
// the connection string for PG
$conn_string = "";
// Ignore if no DB information exists
if (!$this->hostname || !$this->userid || !$this->database)
return;
// Create connection string
$conn_string .= ($this->hostname) ? " host=$this->hostname" : "";
$conn_string .= ($this->userid) ? " user=$this->userid" : "";
$conn_string .= ($this->password) ? " password=$this->password" : "";
$conn_string .= ($this->database) ? " dbname=$this->database" : "";
$conn_string .= ($this->port) ? " port=$this->port" : "";
$conn_string .= ($connection["db_hostname"]) ? ' host='.$connection["db_hostname"] : "";
$conn_string .= ($connection["db_userid"]) ? " user=" . $connection["db_userid"] : "";
$conn_string .= ($connection["db_password"]) ? " password=" . $connection["db_password"] : "";
$conn_string .= ($connection["db_database"]) ? " dbname=" . $connection["db_database"] : "";
$conn_string .= ($connection["db_port"]) ? " port=" . $connection["db_port"] : "";
// Attempt to connect
$this->fd = @pg_connect($conn_string);
if (!$this->fd || pg_connection_status($this->fd) != PGSQL_CONNECTION_OK) {
$result = @pg_connect($conn_string);
if (!$result || pg_connection_status($result) != PGSQL_CONNECTION_OK) {
$this->setError(-1, "CONNECTION FAILURE");
return;
}
// Check connections
$this->is_connected = true;
$this->password = md5($this->password);
// Set utf8
//$this ->_query('set client_encoding to uhc');
return $result;
}
/**
* @brief DB disconnection
**/
function close()
function _close($connection)
{
if (!$this->isConnected())
return;
@pg_close($this->fd);
@pg_close($connection);
}
/**
@ -139,34 +111,29 @@ class DBPostgresql extends DB
/**
* @brief Begin transaction
**/
function begin()
function _begin()
{
if (!$this->isConnected() || $this->transaction_started == false)
return;
if ($this->_query($this->fd, 'BEGIN'))
$this->transaction_started = true;
$connection = $this->_getConnection('master');
if (!$this->_query('BEGIN')) return false;
return true;
}
/**
* @brief Rollback
**/
function rollback()
function _rollback()
{
if (!$this->isConnected() || $this->transaction_started == false)
return;
if ($this->_query($this->fd, 'ROLLBACK'))
$this->transaction_started = false;
if (!$this->_query('ROLLBACK')) return false;
return true;
}
/**
* @brief Commits
**/
function commit()
function _commit()
{
if (!$this->isConnected() || $this->transaction_started == false)
return;
if ($this->_query($this->fd, 'COMMIT'))
$this->transaction_started = false;
if (!$this->_query('COMMIT')) return false;
return true;
}
/**
@ -178,7 +145,7 @@ class DBPostgresql extends DB
* object if a row is returned \n
* return\n
**/
function _query($query)
function __query($query, $connection)
{
if (!$this->isConnected())
return;
@ -205,20 +172,17 @@ class DBPostgresql extends DB
}
*/
// Notify to start a query execution
$this->actStart($query);
$arr = array('Hello', 'World!', 'Beautiful', 'Day!');
// $arr = array('Hello', 'World!', 'Beautiful', 'Day!');
// Run the query statement
$result = @pg_query($this->fd, $query);
$result = @pg_query($connection, $query);
// Error Check
if (!$result) {
// var_dump($l_query_array);
//var_dump($query);
//die("\nin query statement\n");
//var_dump(debug_backtrace());
$this->setError(1, pg_last_error($this->fd));
$this->setError(1, pg_last_error($connection));
}
// Notify to complete a query execution
$this->actFinish();
// Return result
return $result;
}
@ -565,7 +529,7 @@ class DBPostgresql extends DB
* In order to get a list of pages easily when selecting \n
* it supports a method as navigation
**/
function _executeSelectAct($queryObject)
function _executeSelectAct($queryObject, $connection)
{
$query = $this->getSelectSql($queryObject);
@ -576,7 +540,7 @@ class DBPostgresql extends DB
// TODO Add support for click count
// TODO Add code for pagination
$result = $this->_query ($query);
$result = $this->_query ($query, $connection);
if ($this->isError ()) {
if ($limit && $output->limit->isPageHandler()){
$buff = new Object ();
@ -598,7 +562,7 @@ class DBPostgresql extends DB
}
$count_query .= (__DEBUG_QUERY__&1 && $output->query_id)?sprintf (' '.$this->comment_syntax, $this->query_id):'';
$result_count = $this->_query($count_query);
$result_count = $this->_query($count_query, $connection);
$count_output = $this->_fetch($result_count);
$total_count = (int)$count_output->count;